History of sound in cinema

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Across
  1. 2. of the highest quality or level
  2. 4. to cut something off abruptly
  3. 6. to become stuck or blocked
  4. 8. narrow pieces of an object such as paper, or film etc.
  5. 10. to attract or pull in
  6. 11. to display or exhibit proudly
  7. 12. eccentric or zany
  8. 13. wavering or unsteady
  9. 16. a period of time
  10. 18. to direct one's attention or efforts towards something
  11. 22. the perforations along the edges of film that engage with the sprockets of a projector
  12. 23. a reference to something from the past
Down
  1. 1. a long, loud cry, often expressing pain, fear, or anger
  2. 2. tiny spots or blemishes
  3. 3. to fix something firmly and securely in a surrounding mass
  4. 5. to peel or come off in small pieces
  5. 7. a prolonged, continuous, sibilant sound
  6. 8. few and far between, not plentiful
  7. 9. to deal with or manage something
  8. 14. smallest in amount or degree
  9. 15. a firm hold or grasp
  10. 17. extravagant or sumptuous
  11. 19. reorganized or equipped for a new purpose
  12. 20. causing significant disruption or change
  13. 21. a thin, flat piece cut from something